Ah there is a desktop client site though! It doesn't seem to be compatible with SteemAuto though, which is a bit sad. Also it does things to the resolution of your pictures sometimes, I'm not sure what it is but a number of pictures I uploaded ended up much smaller than original (from 2000x2000 to maybe 500x500). It's also in alpha phase so probably not really ready although I see quite a few people on there already.